------------------------------------------------------------------------
| 99 | |
| 100 | //------------------------------------------------------------------------ |
| 101 | unsigned vcgen_contour::vertex(double* x, double* y) |
| 102 | { |
| 103 | unsigned cmd = path_cmd_line_to; |
| 104 | while(!is_stop(cmd)) |
| 105 | { |
| 106 | switch(m_status) |
| 107 | { |
| 108 | case initial: |
| 109 | rewind(0); |
| 110 | |
| 111 | case ready: |
| 112 | if(m_src_vertices.size() < 2 + unsigned(m_closed != 0)) |
| 113 | { |
| 114 | cmd = path_cmd_stop; |
| 115 | break; |
| 116 | } |
| 117 | m_status = outline; |
| 118 | cmd = path_cmd_move_to; |
| 119 | m_src_vertex = 0; |
| 120 | m_out_vertex = 0; |
| 121 | |
| 122 | case outline: |
| 123 | if(m_src_vertex >= m_src_vertices.size()) |
| 124 | { |
| 125 | m_status = end_poly; |
| 126 | break; |
| 127 | } |
| 128 | m_stroker.calc_join(m_out_vertices, |
| 129 | m_src_vertices.prev(m_src_vertex), |
| 130 | m_src_vertices.curr(m_src_vertex), |
| 131 | m_src_vertices.next(m_src_vertex), |
| 132 | m_src_vertices.prev(m_src_vertex).dist, |
| 133 | m_src_vertices.curr(m_src_vertex).dist); |
| 134 | ++m_src_vertex; |
| 135 | m_status = out_vertices; |
| 136 | m_out_vertex = 0; |
| 137 | |
| 138 | case out_vertices: |
| 139 | if(m_out_vertex >= m_out_vertices.size()) |
| 140 | { |
| 141 | m_status = outline; |
| 142 | } |
| 143 | else |
| 144 | { |
| 145 | const point_d& c = m_out_vertices[m_out_vertex++]; |
| 146 | *x = c.x; |
| 147 | *y = c.y; |
| 148 | return cmd; |
| 149 | } |
| 150 | break; |
| 151 | |
| 152 | case end_poly: |
| 153 | if(!m_closed) return path_cmd_stop; |
| 154 | m_status = stop; |
| 155 | return path_cmd_end_poly | path_flags_close | path_flags_ccw; |
| 156 | |
| 157 | case stop: |
| 158 | return path_cmd_stop; |